MyMedR

IN connexion with a programme of studies of the relationships between biochemical and ethnological differentiations (some aspects of which have already been discussed1) proceeding in this Department, we wished to explore the possibility of improving existing procedures for the estimation of amino-acids separated on paper chromatograms2, before beginning an investigation of the patterns of urinary excretion of amino-acids by normal members of various ethnic groups living in Malaya.

Haemoglobin E in Malaya

LEHMAN H, SINGH RB

Nature, 1956 Sep 29;178(4535):695-6.

PMID: 13369502

A virus resembling Russian spring-summer encephalitis virus from an ixodid tick in Malaya

SMITH CE

Nature, 1956 Sep 15;178(4533):581-2.

PMID: 13369466

The University of Malaya [duplicate title1]

Caine S

Nature, 1955;175:186-188.

DOI: 10.1038/175186a0

Xanthomycin A

Dougall D, Abraham EP

Nature, 1955;176:256.

DOI: 10.1038/176256a0

WHILE studying the antibacterial products of a species of Streptomyces (N.C.I.B. 8697) sent by Dr. R. Green from Malaya, we have isolated an orange-red coloured basic substance which is very active against a variety of bacteria and is highly toxic to mice. The antibiotic was extracted from the culture fluid into chloroform, at pH 6, and re-extracted into water at pH 2, or extracted into trichloroethylene, at pH 8.5, and re-extracted into water at pH 3.5. It was purified by counter-current distribution in a solvent system consisting of trichloroethylene and 0.1 M sodium citrate buffer, pH. 5.95. In this system its partition coefficient, K (Combining double low line concentration in trichloroethylene/concentration in water), was 0.98. The purified product yielded a crystalline hydrochloride, reineckate and picrate. The behaviour of this antibiotic suggests that it is identical with, or very closely related to, xanthomycin A - a substance which has been isolated from species of Streptomyces1, and stated to have quinonoid properties2. We wish to record, however, that it is a stronger base than xanthomycin A has been reported to be and that it yields two simple bases on hydrolysis which have not been described as degradation products of xanthomycin A. © 1955 Nature Publishing Group.

Renal excretion of 17-ketosteroids by members of some ethnic groups living in Malaya

LUGG JW, BOWNESS JM

Nature, 1954 Dec 18;174(4442):1147-8.

PMID: 13223769

Pharmacological and toxicological actions of dart poison used in Malaya

LIN RC

Nature, 1952 Sep 06;170(4323):416.

PMID: 12993184

Effects of DDT upon different species of mosquitoes in Malaya

REID JA

Nature, 1951 Nov 17;168(4281):863-5.

PMID: 14899505